Mailbag in two Parts: Content Part1: 00:40 125kHz RFID tags http://s.click.aliexpress.com/e/cdeh3hDW 00:40 125kHz RFID reader small round http://s.click.aliexpress.com/e/eHe9MnW 01:55 13.56MHz RFID tag http://s.click.aliexpress.com/e/bTy0lfLi 02:26 125kHz RFID stickers http://bit.ly/2PgM2c0 03:05 13.56MHZ/125KHZ RFID reader http://s.click.aliexpress.com/e/bHqARHEY 03:38 125kHz RFID reader (cheap) http://s.click.aliexpress.com/e/bVY4FZfS 03:59 Voice Module (ISD1820) http://s.click.aliexpress.com/e/iXnyESy 04:53 UV sensor http://s.click.aliexpress.com/e/bDf1ym9S 05:49 TPL5110 http://s.click.aliexpress.com/e/c4uEBXFS 06:40 GPS module http://bit.ly/2MR63UY 07:07 RAK Gateway PCB https://github.com/hallard/RAK831-Zero 07:13 RFID credit cards (125kHz) http://s.click.aliexpress.com/e/cd2P1yMg 07:13 RFID credit cards (13.56MHz) http://s.click.aliexpress.com/e/bc5RhdCc 07:40 Raspberry Pi 3+ http://bit.ly/2L5z0uI 08:07 RFID Stickers (13.56MHz) http://s.click.aliexpress.com/e/cW0iv1q0 09:25 RFID reader (dual mode) http://s.click.aliexpress.com/e/cpNlvjWY 10:23 Piezo elements http://s.click.aliexpress.com/e/b5h1WHJ6 10:23 Piezo elements http://bit.ly/2vRVc6t 10:23 Piezo elements http://bit.ly/2BfD8IG 10:23 Energy Harvester http://s.click.aliexpress.com/e/c2M5gBhe 11:38 TTGO ESP32 Lora T-Beam http://bit.ly/2OLaUHR 13:02 TTGO ESP32 Lora V2.1 http://bit.ly/2OHUwYw Content part 2: 00:54 3W IR LEDs http://s.click.aliexpress.com/e/b9z0nuNa 00:54 IR Lenses for those diodes http://s.click.aliexpress.com/e/b1BihUqG 00:54 High Power (bigger than 3W) IR diodes http://s.click.aliexpress.com/e/b1E5ic56 05:09 SAM connectors for semi rigid http://s.click.aliexpress.com/e/cnmqjL4c 05:26 FPGA Evaluation Board http://bit.ly/2w5oQ7y 06:51 Monster Motor Driver (VNH2SP30) http://s.click.aliexpress.com/e/cgIliREY 07:47 RFID Reader for Windows http://bit.ly/2Mj0HFD 08:10 Jevois camera https://amzn.to/2o0Kjek 10:16 Pixy2 Camera https://amzn.to/2BxerYt 11:14 Neopixel 8x8 matrix http://s.click.aliexpress.com/e/c3hfOMXm 12:56 433 MHz Receiver & Transmitter http://s.click.aliexpress.com/e/0goPvLK 13:35 3W RF amplifier http://s.click.aliexpress.com/e/bxVSSeAU 14:17 SDR Dongle (R820T2 ) http://s.click.aliexpress.com/e/cHpJOUMs 15:43 868MHz LoRa Collinear Antenna https://ebay.to/2MrMgdD This is a link to eBay UK. The supplier ships worldwide. Maybe it is sold out. Check in a few days. This video created some demand ;-) Small Vector Network Analyzer to check your antennas: http://s.click.aliexpress.com/e/WfQkjlQ ... https://www.youtube.com/watch?v=tu0I5LFVsgM

Good news! My fake Polar H7 Bluetooth heart Rate sensor works on my ESP32 using the Arduino IDE. I will show you what I had to do. And much more! Today I can show you - How you can build a sensor which sends data via BLE to a client - A client which can receive these values and display them in Serial Monitor - The mysterious BLE2902 client characteristic configuration and how it works - The details of the protocol used by the heart rate measurement characteristics. This will help you to build other sensors based on different standardized services and characteristics Links: First tutorial video about BLE: https://youtu.be/2mePPqiocUE Sketches: https://github.com/SensorsIot/Bluetooth-BLE-on-Arduino-IDE Neil Kolban's Github: https://github.com/nkolban ESP32 board used: http://bit.ly/2sOMR3E Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess If you want to support the channel and buy from Banggood use this link to start your shopping: https://bit.ly/2jAQEf4 (no additional charges for you) https://www.facebook.com/profile.php?id=100013947273409 https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my main job ... https://www.youtube.com/watch?v=osneajf7Xkg

In video #297, I started to build an 8085 retro computer board with parts that were used in the late 1970s. In the last video, we mainly looked at the hardware. Today we will finish the hardware and start to program the board in assembler. As we did back then. And Ben eater does with a 6502 chip. In today’s video, we will - Build the single board computer designed in video #297 - Test it and I will show the two most important debugging tools - Look at how computers were programmed in the ‘70s and ‘80s - Repeat the binary and hexadecimal numbering schemes - Have a look into the CPU architecture - Look at assembler programming and “spaghetti code” -We will see how stacks work - We will have a look at a nice 8085 simulator - And we will build a “sophisticated” blink program Links: Project: http://bit.ly/32DGjnz (EasyEDA) Code: https://github.com/SensorsIot/8085-Computer 8085 Cross Compiler: https://www.sbprojects.net/sbasm/ 8085 Simulator: https://www.sim8085.com/ 8085 programs: https://www.tutorialspoint.com/8085-program-for-running-light-with-delays-using-lookup-table EPROM Programmer: https://s.click.aliexpress.com/e/_d6xqld3 or https://amzn.to/2PvmoSz EPROM Eraser: https://s.click.aliexpress.com/e/_d7c0y09 or https://amzn.to/3ciOCtx 8 LED board: https://s.click.aliexpress.com/e/_d793Nnj Ben Eater does a similar thing: https://www.youtube.com/channel/UCS0N5baNlQWJCUrhCEo8WlA Labels for the chips: https://github.com/Upcycle-Electronics/ChipLabels/blob/master/AndreasSpiess8085/AndySpi8085.pdf The links above usually are affiliate links which support the channel (no additional cost for you). Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/profile.php?id=100013947273409 https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job ... https://www.youtube.com/watch?v=qizt0ePFEZA

What the hell is Zigbee? Do I really need to care about it? It is mainly used by expensive devices like the Philips Hue system for people with deep pockets? This is what I thought until now. But I have indications that this changed. Let’s have a closer look. We all know Wi-Fi, Bluetooth, 433MHz, and LoRa devices and probably already use some of them. So, what is Zigbee? How does it fit into the other technologies, and how can we get a head start with it? Let’s play with the technology and learn how it works and whether and where it can be useful for us. Or if we can skip this one. I am a proud Patreon of GreatScott!, Electroboom, Electronoobs, and others. Links: Zigbee2mqtt project: https://www.zigbee2mqtt.io Ikea Tradfri: https://www.ikea.com/ch/en/catalog/categories/departments/home_electronics/36812/ Xiaomi ZigBee devices: http://s.click.aliexpress.com/e/BGsdpble Philips Hue: https://www2.meethue.com/en-us CC2531 Dongles and programmers: http://s.click.aliexpress.com/e/dP2miONi or http://bit.ly/2NogMdv Zigbee Modules: http://s.click.aliexpress.com/e/5OjauYUY Other examples: http://bit.ly/2NqWH65 or http://bit.ly/2Nspl71 Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess My Bitcoin address: 19FSmqbBzb5zsYB1d8Bq4KbxVmezToDNTV If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/profile.php?id=100013947273409 https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my primary job #zigbee #Arduino #smart home ... https://www.youtube.com/watch?v=nAOIlTCQNnY