When my 5 year old son asked me for a phone, i told him i would make one for him. The phone uses an Arduino and a SIM800L module that i bought on Taobao for RMB 35. There are a
When my 5 year old son asked me for a phone, i told him i would make one for him. The phone uses an Arduino and a SIM800L module that i bought on Taobao for RMB 35. There are a