Article

Remote Control by Mobile Phone

Receive back: confirmation and GPS position data

Remote control using mobile phones and SMS (Text Messaging) is in great demand but many systems on sale suffer from imperfections. The ingenious new design combines powerful capabilities with low technical overheads. It has programmable AC mains switching outlets plus status reports by text message and alarm-activated delivery of GPS data. The project featured in this article employs readily available mobile phones for the GSM receiver and data output function (at no cost at all if you use discarded handsets).

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Materials

080324-PCB.pdf

080324-11.zip

Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.

The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.

PCB

Download Gerber file: 080324-1.zip

Components

The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.

Download the BOM list

Component list

Resistors
R1,R3,R5,R7,R9,R11 = 1kohm5
R2,R4 = 10kohm
R6,R8,R10 = 1kohm
R12 = see text
R13,R14,R15 = 1Ohm/volt, 2W (see text)
Capacitors
C1 = 220µF 35V
C2, C11 = 100nF
C3 = 3µF3 50V
C4,C5,C6,C7,C8 = 1µF 16V
C9,C10 = 22pF
C12,C13,C14 = 0.1µF/ampère (see text)
Semiconductors
D1 = P6KE30A, TVS (30V / 600W)
D2, D3 = SB320 or 1N5820 (Schottky; 3A / 20V)
D4 = LED, red, low current, 3mm
D5 = LED, green, low current, 3mm
D6-D9 = LED, yellow, low current, 3mm
D10,D11,D12= 1N4148
T1,T2,T3 = BC337 (TO92 case)
IC1 = L78S05CV (TO220 case)
IC2 = MAX232CPE+ (DIP16 case)
IC3 = ATMEGA8-16PU, DIP28 case, programmed, Elektor SHOP # 080324-41
OC1 = PC817X2J000F, optocoupler, DIP4 case
Inductor
L1 = 40µH 2A (e.g. EPCOS)
Miscellaneous
X1 = 8-MHz quartz crystal (HC49 case)
RE1,RE2,RE3 = HRS4E-S (DC 5V)
K1 = DC adapter socket, PCB mounting
K2 = 2-way PCB screw terminal block, lead pitch 5mm
K3-K5 = 2-way pinheader, lead pitch 2.54mm
K6 = 9-way sub-D plug (male), PCB mount
K7 = 6-way mini-DIN socket, PCB mount
K8 = 6-way SIL pinheader, lead pitch 2.54mm
JP1,JP2,JP3 = 2-way SIL pinheader, lead pitch 2.54mm
S1 = MCRH2AF-10R 10-way DIP rotary encoder
S2 = MCDS02 2-way DIL switch
S3 = FSM4JH single-pole pushbutton, PCB mount
F1 = auto-resetting PTC fuse, 30V, sustain current 1.1A, activation current 2.2A, e.g. Multifuse MF-R110-0-99 (Bourns) or Polyfuse 30R110 (Littlefuse) or Polyswitch RUEF110 (Tyco), ES-LP30-110 (ESKA) = PFRA 110 (Reichelt.de)
P1-P8 = 1mm dia. solder pin
IC sockets for IC2 (DIL16), IC3 (DIL28), OC1 (DIL6 used as DIL4)
Heatsink for IC1 (U profile, 25x15x20 mm, 17K/W, slotted hole)
M3 screw, 10 mm, with nut (for securing heatsink)
Blue transparent enclosure, 150x80x50 mm (LxWxH), e.g. Conrad Electronics # 522498
PCB, Elektor Shop # 080324-1 or kit incl. PCB, # 080324-71