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badge [2019/04/03 20:00]
jim created
badge [2020/02/22 16:52] (current)
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-====== ​Scottish Consulate ​Badge ======+====== ​Consular ​Badge ======
-====Concept==== +An electronic badge for Scottish Consulate  ​members and visitors, ​featuring a multimeter, ​Pusheenicorn with Neopixel mane/tail and 2.4 GHz wireless.
-An electronic badge for ScotCon ​members and visitors. Low cost, straightforward self-assembly,​ unicorn or pusheenicorn shape, LCD, neopixels, multimeter, ​IO ports+
-====PCB==== +Consular Badge Prototype
-Max 100x100m 2 layer 1.6mm FR4 material, 1oz copper, 0.3mm min hole, 0.4mm solder mask dam, 0.42mm min track, HASL finish, blue finish/​white silkscreen for minimum manufacturing cost from Seeed Studio+
-Form factor: Unicorn, Pusheenicorn or Saltire, must be easy to mill, no complex shapes/​sharp corners to minimise cost 
-====Processor==== +{{:​wiki:​badge_under_test_scaled_img_20190615_143015.jpg?​400|}}
-ARM Cortex M4 STM32F303K8 Nucleo board (64K Flash), development environment ARM MDK V5 (free version, 32K code limit), OpenSTM 32 also possible, no code size limit but less stable+
-====User Interface==== +Breadboard Prototype Under Test
-Nokia 5110 LCD, 500uA @3V 6mA @5V (can reduce backlight LED current via resistor) +
-Neopixels on tail/mane +
-Buttons and/or joystick/​rotary encoder+
-0-50V DC/AC, continuity, diode test 
-UART/serial port - serial terminal or packet radio monitor connected to TNC? 
-Shitty Add-On (I2C) connector 
-Wireless - NRF42L01 module (cheap clones on eBay) - interact with other badges; 433 MHz packet radio receiver - pager receiver or LED control? 
-3V battery: LiPo, 2xAA or coil cell? Or 1x AA and boost converter? USB charging? ​ 
badge.txt · Last modified: 2020/02/22 16:52 by jim