badge
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| — | badge [2019/04/03 20:00] – created Jim | ||
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| + | ~~NOTOC~~ | ||
| + | ====== Scottish Consulate Badge ====== | ||
| + | ====Concept==== | ||
| + | An electronic badge for ScotCon members and visitors. Low cost, straightforward self-assembly, | ||
| + | |||
| + | |||
| + | ====PCB==== | ||
| + | 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/ | ||
| + | |||
| + | Form factor: Unicorn, Pusheenicorn or Saltire, must be easy to mill, no complex shapes/ | ||
| + | |||
| + | |||
| + | ====Processor==== | ||
| + | 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==== | ||
| + | Nokia 5110 LCD, 500uA @3V 6mA @5V (can reduce backlight LED current via resistor) | ||
| + | Neopixels on tail/mane | ||
| + | Buttons and/or joystick/ | ||
| + | |||
| + | ====Multimeter==== | ||
| + | 0-50V DC/AC, continuity, diode test | ||
| + | |||
| + | ====Communication==== | ||
| + | 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? | ||
| + | |||
| + | ====Power==== | ||
| + | 3V battery: LiPo, 2xAA or coil cell? Or 1x AA and boost converter? USB charging? | ||
badge.txt · Last modified: 2023/07/03 20:51 by Jim