Labels Milestones
BackJ7, J8, J9 | 1 | Conn_01x04 | Pin socket, 2.54 mm, 1x7 | | | | Tayda | A-157 | | | | | | | | Tayda | A-553 | | | U1 | 1 | Conn_01x07 | *(optional) SIP socket, 2.54 mm, 1x10 | | Tayda | A-553 | | | S2 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14